CVE-2026-43047: linux Out-of-bounds Write
Vulnerability summary
CVE-2026-43047 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.7% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 43 · Related 40Timeline
- 01-05-2026PublishedVulnerability first disclosed.
- 19-10-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: HID: multitouch: Check to ensure report responses match the request It is possible for a malicious (or clumsy) device to respond to a specific report's feature request using a completely different report ID. This can cause confusion in the HID core resulting in nasty side-effects such as OOB writes. Add a check to ensure that the report ID in the response, matches the one that was requested. If it doesn't, omit reporting the raw event and return early.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.12%
Chance of exploitation in the next 30 days
Percentile
2%
Versus all other CVEs
30-day change
0.00 pp
From 0.12% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Affected systems
Ubuntu157 products
- linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095, < 516da3f25cfe18643835af1cf09b0e9ffc36c383 | ≥ 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095, < a61163daf8a90b4a7ef154d5fc9c525f665734e3 | ≥ 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095, < 74c6015375d8b9bc1b1eb79f20636c8e894bcad7 | ≥ 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095, < c7a27bb4d0f6573ca0f9c7ef0b63291486239190 | ≥ 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095, < 6a4acd3e86fe5584050c213d95147eba33856033 | ≥ 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095, < 7f66fdbc077faed3b52519228d21d81979e92249 | ≥ 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095, < 2edc92f89eee328b5be5706b5d431bf90669e9c0 | ≥ 6d4f5440a3a2bb2e9d0d582bbf98234e9e9bb095, < e716edafedad4952fe3a4a273d2e039a84e8681a | fee906f035f0bd18ff12d84d58766c44a2ab0918 | ≥ 4.3.6, < 4.4 | 4.4
- linux_kernel≥ 4.4, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.168 | ≥ 6.2, < 6.6.134 | ≥ 6.7, < 6.12.81 | ≥ 6.13, < 6.18.22 | ≥ 6.19, < 6.19.12 | 4.3.6 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4
Debian1 product
- linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.12-1
3 vendors · 160 products
